clayton



NiTED STATES ATENT OFFICE.

HERBERT F. CLAYTON ANDV GEORGE Il. I'IOLDROYD, lOF HUDDERSFIELI), OOITNTY OF YORK, ENGLAND.

FILTER.

SPECIFICATION forming part of Letters Patent No. 409,273, dated August 20, 1889.

Application tiled November 14, 1888. Serial No. 290,805. (No model.)

.To @ZZ whom it may con/cern.:

lle it known that we, HERBERT FITZROY CLAYTON and GEoReE HOLDEN HoLDnovD, subjects of the Queen of Great Britain, residing at Lockwood, Huddersfield, in the county of York, England, have invented a new and useful Improved Method of Filtering and Apparatus Therefor, of which the following is a specification.

This invention relates to an apparatus for lFiltering muddy or impure water; and it consists, essentially, in' the combination of devices hereinafter described, and having for their object, first, partially or roughly iilterin g the muddy or impure water, the mud or sedi- `ment separated being retained below the liltering material and periodically discharged by flushing, and then causing the partially-filtered water to rise into cloth-covered perforated tubes, where it is still further filtered by being forced through the cloth, which can be easily removed in order to renew the same.

In order to enable our invention to be fully understood, we will describe how it can be carried into practice by reference to the accompanying drawings, in whichr Figures l and 2 are longitudinal and transverse sections, respectively, of an apparatus for filtering according to our invention.

A A are filter-tubes covered with ilteringcloth, which is turned in at both ends of the tubes and secured in position by means of tapering' nozzles B and screw-plugs O, actuated by hand-wheels and screws N, all the said parts being similar to those described iu the speciication of the former application of ourselves and Robert Cooper, filed in the United States Patent Office on or about the 5th day of July, 1888, Serial No. 279,144 or the filter-cloth may be xed inside the tubes instead of being rolled on the outside, as previously described. According to our present improvements we fix the said parts in a vertical position instead of horizontally by means of the girder A and the standards B. The water to be filtered is forced by the pump L through the pipe L into a channel E, forming the lower part. of the primary iiltering chamber or cylinder D. The

water rises from the channel E through the grating I), upon which is placed a filterin g medium K, the latter being prevented by the top grating O from floating and from being displaced. The water rises through the filtering medium and through the nozzles I3 into the tilter-pipes A, which are covered with filtercloth, as described, and as the filtered water passes through the cloth it falls into the eistern or receiver R, whence it iiows through a spout or pipe S to the required place.

The object of the ch'amber D, with the contained rough filtering medium, is to arrest a large portion of the sediment and heavier or more easily separable particles before they reach the filtering-tubes, whereby the filteringcloth with which the tubes are surrounded is kept clean for a longer period than would otherwise be the case, and there is not so much liability to force accu mulated dirt through the meshes of the cloth by the force of the water under pressure.

A large portion of mud and sediment accumulates in the channel E under the bottom grating P, and this is periodically washed away into a convenient drain by opening the valve F, through which water then rushes, carrying any accumulated sediment with it.

Having now particularly described and ascertained the nature of our said invention and in what manner the same is to be performed, we declare that what we claim isl. The combination, with a series of Vertical cloth-covered filtering-tubes, of a primary liltering-chamber communicating therewith and located beneath the same, andhavin g at its under part a channel to receive the sediment, and provided with top and bottom gratings and a blowout valve for discharging the sediment accumulated in said channel, a vgirder and standards to support the filtentubes, and a receiving-tank through which the tubes pass and into which the water from the tube falls, all substantially as and for the purposes set forth.

2. In combination, a primary lilteringch amber having a sedimentchannel, top and bottom gratings, inlet-pipe and drain-pipe, a se ries of vert-ical filter-'pipes connected to and surmounting said chamber and provided with lilter-cloth, as described, and a horizontal receiving-tank R, into which the water filtered through such filter-pipes falls, all substantially as shown aud described.

II. F. CLAYTON, G. Il. HOLDROYD.

Witnesses:

W. J. BAKER, PERcY BAKER.

IOO 

